Making my own modpack, what does org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: mean?

[Bean05]

This was the report:

 

https://paste.ee/p/YC1D2

 

Edited December 8, 2023 by Bean05
pastee

[Paint_Ninja]

It means a mod tried directly modifying the game instead of using a Forge API and failed to do so.

Please share a link to your crash report on https://paste.ee as explained in the FAQ. Do not dump it directly in the thread.